The major product obtained when tert-butyl bromide is heated with sodium ethoxide is

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Ehene

2-Methylpropene

Diethyl ether

tert-Butylmethylether

answer is A.

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Detailed Solution

tert-Butyl bromide (CH₃)₃CBr undergoes elimination when heated with sodium ethoxide (NaOEt).

Sodium ethoxide (NaOEt) is a strong base, which facilitates dehydrohalogenation (elimination of HBr) from tert-butyl bromide.

Mechanism:

The base (OEt^-) abstracts a proton (H⁺) from a beta-carbon adjacent to the carbon attached to the bromine atom.
The bromine atom leaves as bromide ion (Br^-).
A double bond forms between the beta-carbon and the carbon that lost bromine, resulting in 2-methylpropene (CH₂=C(CH₃)₂).

Reaction:

(CH₃)₃CBr + NaOEt → CH₂=C(CH₃)₂ + NaBr + EtOH

Thus, the major product is 2-Methylpropene.